Hinge



(No Model.)

H. BLACK.

HINGE. I No. 557,473. 4 Patented Mar, 31, 1896.

' J. mezu'ron M;mz mac UNITED STATES PATENT OFFICE.

RICHARD BLACK, OF OANNONSBURG, PENNSYLVANIA.

HINGE.

SPECIFICATION forming part of Letters Patent No. 557,473, dated March31, 1896.

A li ti fil d November 14,1895. Serial No. 568,876. (No model.)

To all whom it may concern:

Be it known that I, RICHARD BLACK, of Cannonsburg, in the county ofWashington and State of Pennsylvania, have invented a new and usefulImprovement in Self- Closing Doors, of which the following is a full,clear, and exact description, reference being had to the accompanyingdrawings, forming part of this specification, in which Figure 1 is afront elevation of a door provided with my improved closing mechanism,partly broken away. Fig. 2 is a similar View on a larger scale, showingthe door in partlyopened position; and Fig. 3 is a detail view of thesill-plate.

My invention relates to the mechanism employed for self-closing doors,and is designed to afford a simple, cheap, and effective device whichshall close the door when swung open in either direction and shall alsostop the door when it swings back from open to closed position andprevent its continued swing in the opposite direction beyond its normalclosed position.

In the drawings, in which similar numerals indicate corresponding parts,2 is a door which is supported upon pintles 3 and 4. The lower pintleprojects into a suitable hole in a plate 5, which is sunk in the sill,and in this plate is provided a recess 6 with substantially verticalsides, from which the oppositely-inclined faces 7 lead to the surface ofthe plate, which is substantially flush with the sill. Into this recessprojects the lug 8 upon the door, this lug having a rounded lower endarranged to ride up one of the inclined faces 7 as the door is pushedopen. The lug 8 and pintle 4 may be cast integral with a plate 9 securedto the lower edge of the door or maybe formed and attached to the doorin any other desired way. The hole forming the bearing for the upperpintle is longer than the pintle, so that as the door swings open and israised as a whole by the lug 8 riding up the incline the pintle may moveupwardly in its bearing. To seal the opening at the upper end of thedoor, I recess the frame-piece 10 and place in the recess the strip 11,which is secured at the outer end of the tapering recess and is presseddownwardly at the other end by the spring 12, so as to contact with theupper edge of the door when closed.

My invention is especially applicable to doors without latches, thoughit may be used upon other doors or upon gates of Various characters, andby the word door in the claim I intend to cover all kinds of doors orgates.

The advantages of the device will be apparent to those skilled in theart, since the door when opened and released is not carried by itsmomentum beyond its central position, but is stopped at such position bythe depending lug entering the recess of the plate and striking theopposite side of such recess. Moreover, the device is simple, easilyattached and operated, and is not liable to get out of order.

I claim- A self-closing door comprising asill having a pintle-receivinghole, and in front of the same a recess provided with substantiallyvertical sides, inclined faces leading in opposite directions from therecess, and a door having rigidly secured thereto in front of its pintlea depending lug arranged to enter the recess and stop the door in closedposition; substantially as described.

In testimony whereof I have hereunto set my hand.

RICHARD BLACK. WVitnesses:

A. B. MoOLoY, ALEX SPEER.

